Yeah i don't think your tune is working. You are only getting about 420hp. Which is much much lower than the Dinan advertised 501hp.

Actually Stock 550i were dyno at 380 wheel hp. So you are pretty much stock.

You should get it check out.

Quote:

Originally Posted by alextremo

Don't worry about absolute numbers. There are too many variables to consider. The gains from stock are really good in those graphs and that's what is important - it looks like you are somewhere north of +70hp at the wheels at peak with a bunch of power picked up throughout the entire curve.

People making assumptions by looking at the absolute numbers only have no idea what they are talking about.

Thank you Alextremo, Smash is hung up on stock dyno numbers without realizing that dynos vary and the main reason for a dyno is to calculate your gains.

The N54/N55 Vehicle Engine Power were Significantly Underrated from Factory with the help of basic bolts and the ability to tune up the boost levels to nearly twice the factory ratings allows those vehicles to generate that kind of power. That really shouldn't keep you down, the Power and the Torque delivery on the Twin Turbo V8 is just as intoxicating.

I would like to share some of the recent upgrades we have done to this amazing 550i yet again. We started off by removing the Avant Garde Wheels to make room for the 480MM Dinan by Brembo Big Brake Kit. For there the car was sent off to Braman BMW to get reflashed with the Dinan Stage 3 Performance Software and brought back to get our Active Autowerke Downpipes and dyno'ed.